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<!DOCTYPE HTML>
<html>
<head>
  <title>Test for navigator property override</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test"></pre>
<script class="testbody" type="text/javascript">

  ok(navigator.appName, "This is used just to populate the cache");
  ok(navigator.appVersion, "This is used just to populate the cache");

  // B2G could have an empty platform.
  info(navigator.platform);

  ok(navigator.userAgent, "This is used just to populate the cache");

  SpecialPowers.pushPrefEnv({"set": [
    ["general.appname.override", "appName overridden"],
    ["general.appversion.override", "appVersion overridden"],
    ["general.platform.override", "platform overridden"],
    ["general.useragent.override", "userAgent overridden"],
    ]},
    function() {
      var ifr = document.createElement('IFRAME');
      ifr.src = "about:blank";

      ifr.addEventListener('load', function() {
        var nav = ifr.contentWindow.navigator;
        isnot(navigator.appName, nav.appName, "appName should match");
        isnot(navigator.appVersion, nav.appVersion, "appVersion should match");
        isnot(navigator.platform, nav.platform, "platform should match");
        isnot(navigator.userAgent, nav.userAgent, "userAgent should match");
        SimpleTest.finish();
      }, false);

      document.getElementById('content').appendChild(ifr);
    }
  );

  SimpleTest.waitForExplicitFinish();

</script>
</pre>
</body>
</html>
